Lock for freight-car doors



Ju1y24,1923. 1,462,916

F. MATHEws LOCK FOR FREIGHT CAR DOORS Filed March l. 1922 weuor 23.1/ Wma-W44( Patented July 24, 1923.

UNETED STTFS FRED llATI-IEW'S, 0F CHICAGO, ILLINOIS. i

LGCK FOR FREIGHT-CAR DOORS.

Application filed March 1, 1922. Serial No. 54.05146.

To all whom t may concern.'

Be it known that I, FRED MATHEws, a citizen of the United States, residing at Chicago, in the vcounty of Cook and State of Illinois, have invented certain new and useful Improve-ments in Locks for Freight-Car Doors, of which the following is a full, clear, and exact description.

My invention relates to means for locking the rear edge of sliding doors and vparticularly to blind means in the rear vertical member of freight car door-'frames that are engaged by the sliding door therefor.

The object of myinvention is #to provide a locking fixture that is situatedv in the vertical member of the door-frame and is engaged by the inner surface of the door when the door is being closed and which locks the said rear edge of the same to thevertical member of the door-frame so that the door cannot be burglariously unlocked byllifting it over the guides upon which the door is supported and is adapted to slide. This I accomplish by means hereinafter fully described and as particularly pointedout in the claims.

In the drawings: y

Figure 1 is a side view of a sliding freight car door and door-frame, showing a portion broken away to disclose my invention. A

Figure 2 is a horizontal section through a broken away rea-r portion of a sliding freight-car door and the stanchion of the adjacent broken away portion of the doorframe.

Figure 3 is a side view of the lock attached to a portion of the rstanchion of the door-frame.

Figure 4 is a side view of the lock looking at it at right angles to the view shown in Figure 2. e f

Figure 5 is a side view of the counterplate of the lock.

Referring to the drawings A represents the rear vertical edge of a door-frame, of a freight-car, and B represents the rear portion of a sliding door for closing the doorway, and both of these elements are vof the usual or of any preferred construction, whose upper edges are provided with hangers a, that have groovedv wheels, that travel on an overhead track or tram, (not sho-wn), and whose lower edge is held against the car and guided by guides o, of thei'isu-al construction. l

At a certain point above the sill of the door the outer angle or corner of the rear vertical member of the door-frame is cut away to form a suitable recess in which the frame of the lock is. inserted.y This frame, 3, consists, preferably, of a vertical U-shaped strip of metal, the ends, 4, ofthe parallel portions of which are flanged vertically and provided with screw or rivet holes 5,l by means of which it is secured in position with the parallel portions thereof horizontal. A vertical pivotal pin 6 isthrust through suitable openings in the parallel portions of the frame, 3, and its ends swaged orpheaded, and upon this pin the boss, 7, of t-he lock is loosely mounted. This lock consists of 'a somewhat L-shaped arm, 8, that projects from the upper portions of the boss, 7,'toward the door B, the inner surface `of which latter is adapted toengage the same, substantially as hereinafter explained. The lower edge 9, of the boss 7, commencing from the under edge of the arm 8 'extends downwards and is bevelled. `This bevelled portion terminates in a vertical shoulder 10, which, when the arm istat the lower limit of its vertical reciprocal movement, isadapted to engage shoulder, 11, of a stationary seat, 12, whose upper edges 13, is bevelled to correspond to the Ybevel 79 of the lower edge of the boss 7 of arm 8.

vThe counterpart forarm 8 of the lock is made by providing the inner surface of the door, near the rear vertical edge thereof,

with a recess 14, and providing a rectangular counter-plate 15, that covers thesame and is secured in place by rivets or bolts, 16,k tapped through the openings near vthe corners of` the counter-plate and into or through the door. The rear edge, 17 of the counterpla-te, 15, is bent inwards and enters the recess in the door, andsaid counter-plate is provided-with a rectangular opening 18, the edge of which farthest from edge 17, is provided with a tongue, 19, that is bei-veiled outwards into the recess, 14.

A coil expansion-spring 20, is placed upon the lpivotal pin 6, above the arm 8 and normally keeps the same depressed at they lowest limit of its vertical movement. so that, when the lower bevelled end of the boss ofarm 8 engages the correspondingly bevelled' edge the Varm 8 will occupy the .recess 14and bev under the rear edge of the opening. in the counter-plate, and when the dooryis locked lwill hold the rear edge of the door against Only'when arm 8 enters'the counter-plate and recess will spring 20 lpush -it downwards and rotate it so as to come in the locking position shown in Figure -1 of the drawings.

VVhat I claim as Anew is:

1. The combination with the frame of a doorway iand a lock secured in` a vertical member thereof, of a sliding door for closing the doorway and fa counterpart for said lock .in its inner sur-face out of which the lock is kept by said door when the ,latter is opened, andA `which interlocks therewith whenA the :door is closed.

Q.' The combination with the `frame of Ya doorway, Aand a rlock secured 1in a `vertical member -thereof including ya laterally oscillatory arm, of a sliding door forclosing the doorway and having a counterpart :in its inner surface out of which the arm is kept b the door when the flatter is open, and 'whic interlocks vtherewith when the :door is closed.

3. The combi-nation with the frame vof a doorway, and a .lock secured in a vertical member thereof including` 'a laterally'oscillatory `L-shaped arm, of a sliding' door for closing'the doorway and having-a counterpart rin its inner surface out yof 'which the arm is `kept by the /door'when the latter is open, and `which interlocks therewith when the/door is closed.

ie-,The combination with the frame of a doorway, and a lock secured in a vertical memberthereof including a- 'laterally'oscillatory L-shaped arm, of a sliding door for closing the 'doorway and lhaving a counterpart in itsinner surface one yend of which is overshot out of which the arm is kept by the door when the latter is open, and which interlocks therewith when the door is closed.

5. The combinationwith the frame of a doorway, and a lock secured in a vertical member'thereof that includeszla'normally depressible'oscillatory L-fshaped arm, of a sliding door for closinga 5the doorway, and a counterpart for said lock in itsinner surface one end vedge Vof which is oversh'ot out of i which the lock is kept by "said door when the latter is opened,-and vwhich `interlocks therewith'when the fdoor is closed. i

.The :combination with the frame `of a doorway, and :a .lock securecil kin a vertical 7 The combination with the lframe .of a

doorway, a `U-shaped fram-e sunk into a vertical member thereof, an axial pin the .ends

of which are in the parallel portionsofsaid -U-frame, and an L-shap'ed arm `mounted on 4 said pin and projectingtoward said door, of a door, and va counterpart inthe inner surface thereof one end of which is 4overshot and out of which lthe arm is'kept by said door when it is open, and that 'interlocks therewith when the door is closed.

8. The `combination ywith fherframe cfa doorway, `a fiel-shaped frame sunk yinto va Avertical member thereof, an axial pin 'the ends o'f which are in the parallel `portions `ofsai'd U-frame, 'an L---shaped arm -mounted `on said pin and projecting toward isaid door and-the pivotal boss of said arm projecting Idownwards and its flower edge bevelled and adapted to engage the correspondingly bevelled edge of `a stationary boss made integral with the lower :parallelled portion of said U-shaped frame.

9. The combination with uthe frame of a doorway, and :a 'locksecured in 'a'vertical member thereof including a laterally oscillatory L-shaped arm, of fa sliding door for closing the doorway and having a -counterpart in its inner-surface'comprising'a recess and a ,plate covering thefsame vthat has an opening therein oneend-edge of which :overshoctssaid recess and out of which the farm is kept by the door when the vlatterfisopen,

and which interlocks therewith ywhen 'the door is closed.

`member thereof including a laterally oscillatory L-shaped arm, of a sliding door vfor closing` the doorway rand 'having a counterpart in its inner surface comprising a rec-ess anda plate covering the same that rhas an opening therein one end edgeof which overshoots said recessand theotherend of which has :a tongue that is bent inwards to provide a bevel, and out lofw'hich the Aarmis lkept b v the door vwhen the `latter is open,- and which interlocks therewith when ythe door 'is closed.

In witnessgwhereofl have .hereunto set my hand this '21st .daycf February, 1922. MATHEWS. Vitnessesz 'Vrozcnr WABDELL, ALEXANDRA A. BAILE.y 

